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Implement try_emplace

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This commit is contained in:
Daniel James
2017-02-27 03:59:02 +00:00
parent 958d206bb6
commit 5f5f8ef1e4
5 changed files with 527 additions and 17 deletions
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49
test/unordered/emplace_tests.cpp
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@@ -465,6 +465,55 @@ UNORDERED_AUTO_TEST(emplace_multimap)
BOOST_TEST_EQ(check_.instances(), 20);
BOOST_TEST_EQ(check_.constructions(), 20);
}
UNORDERED_AUTO_TEST(try_emplace)
{
test::check_instances check_;
typedef boost::unordered_map<int, emplace_value> container;
typedef container::iterator iterator;
typedef std::pair<iterator, bool> return_type;
container x(10);
return_type r1, r2, r3;
int k1 = 3;
emplace_value m1(414, "grr");
r1 = x.try_emplace(3, 414, "grr");
BOOST_TEST(r1.second);
BOOST_TEST(r1.first->first == k1);
BOOST_TEST(r1.first->second == m1);
BOOST_TEST_EQ(x.size(), 1u);
BOOST_TEST_EQ(check_.instances(), 2);
BOOST_TEST_EQ(check_.constructions(), 2);
int k2 = 10;
emplace_value m2(25, "", 'z');
r2 = x.try_emplace(10, 25, std::string(""), 'z');
BOOST_TEST(r2.second);
BOOST_TEST(r2.first->first == k2);
BOOST_TEST(r2.first->second == m2);
BOOST_TEST_EQ(x.size(), 2u);
BOOST_TEST_EQ(check_.instances(), 4);
BOOST_TEST_EQ(check_.constructions(), 4);
BOOST_TEST(x.find(k1)->second == m1);
BOOST_TEST(x.find(k2)->second == m2);
r3 = x.try_emplace(k2, 68, "jfeoj", 'p', 49309, 2323);
BOOST_TEST(!r3.second);
BOOST_TEST(r3.first == r2.first);
BOOST_TEST(r3.first->second == m2);
BOOST_TEST_EQ(x.size(), 2u);
BOOST_TEST_EQ(check_.instances(), 4);
BOOST_TEST_EQ(check_.constructions(), 4);
BOOST_TEST(r2.first == x.try_emplace(r2.first, k2, 808709, "what"));
BOOST_TEST(
r2.first ==
x.try_emplace(r2.first, k2, 10, "xxx", 'a', 4, 5, 6, 7, 8, 9, 10));
BOOST_TEST(r2.first->second == m2);
BOOST_TEST_EQ(x.size(), 2u);
}
}
RUN_TESTS()